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Understand the NPK Value Of Different Types Of Fertilizers

Aug. 12, 2021

Your lawn and garden need a variety of nutrients to grow and stay healthy. Soil is an important source of key nutrients such as nitrogen (N), phosphorus (P), and potassium (K), but it does not always contain sufficient amounts. This is why many homeowners rely on commercial fertilizers as supplements. There are many types of fertilizers and nutrients, each of which affects your plants and environment in a unique way. As a Fertilizer Suppliers, share with you.

NPK Compound Fertilizer

NPK Compound Fertilizer

Understand the NPK value

Fertilizers provide plants with three main nutrients: nitrogen, phosphorus and potassium. This nutritional ternary is so important to the health of plants that all fertilizers show NPK values on their packaging. The NPK value represents the volume percentage of nitrogen (N), phosphorus (P) and potassium (K) in the fertilizer. For example, a fertilizer with an NPK value of 16-16-16 contains 16% nitrogen, 16% phosphorus, and 16% potassium (the rest of the fertilizer contains fillers). This also means that the fertilizer NPK ratio is 1:1:1; that is, it contains equal amounts of the three main nutrients. Similarly, fertilizer types with an NPK value of 24-8-16 contain 24% nitrogen, 8% phosphorus, and 16% potassium—an NPK ratio of 3:1:2.

Before choosing a fertilizer, use a soil nutrition test kit to determine the existing nitrogen, phosphorus, and potassium content to determine the best NPK ratio for the soil.

If the soil test shows that the content of all three nutrients is approximately equal, choose a general-purpose fertilizer with an NPK ratio of 1:1:1. These fertilizers contain balanced nutrients and are suitable for flowers, vegetables, shrubs, trees and lawns. The recommended minimum NPK value is 3-3-3, but a 1:1:1 ratio fertilizer has a different NPK value; some popular options include 5-5-5 and 10-10-10. The difference between the two fertilizers is that the nutrient concentration in the 10-10-10 option is twice that of the 10-10-10 option, which means you can apply half of the fertilizer to provide the same level of nutrients to the soil.

On the other hand, if the soil test shows that your soil contains too little or too much of one or more of the three key nutrients, please choose a special fertilizer with a special ratio. For example, if your soil is deficient in nitrogen but rich in phosphorus and potassium, you can choose a fertilizer with an NPK ratio of 3-1-2. Alternatively, you can choose fertilizers that do not contain phosphorus or potassium. When plants are growing, it is also recommended to use special fertilizers that require higher or lower amounts of one of the three nutrients. Our company also has NPK Compound Fertilizer on sale, welcome to contact us.

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